ASTROSAT CZTI

Data Quality Report

Orbit 14255

Creation date: 2024-06-27T16:52:31.703432
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G08_014T01_9000002104_14255cztM0_level2.evt modeM0/AS1G08_014T01_9000002104_14255cztM0_level2_quad_clean.evt
Size (bytes)859,901,760149,195,520
Size820.1 MB 142.3 MB
Events in quadrant A5,578,779970,303
Events in quadrant B6,472,915974,161
Events in quadrant C5,677,674933,148
Events in quadrant D7,577,269887,766

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262
B0294
C0283
D0306

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026539
B026739
C026947
D026650

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282044657
B0309304777
C0276284541
D0368216431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10906540.495140%
B109183683.370581%
C10936340.310900%
D106961191.112565%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 20515 11457 2 2 0.01% 0.02%
B 20515 11467 191 191 0.93% 1.67%
C 20515 11491 0 0 0.00% 0.00%
D 20515 11206 33 33 0.16% 0.29%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 15 206218 755.69 1353 1325 271.1
A 12 189 124981 456.07 1353 1325 271.1
A 9 143 25584 89.47 1353 1325 271.1
B 0 182 598895 2414.41 1332 1301 247.5
B 0 229 285152 1146.82 1332 1301 247.5
B 10 245 258063 1037.37 1332 1301 247.5
C 3 233 538477 1775.38 1315 1324 302.6
C 13 61 9405 26.71 1315 1324 302.6
C 14 234 8685 24.33 1315 1324 302.6
D 8 195 1223253 4044.88 1282 1254 302.1
D 13 122 676676 2235.68 1282 1254 302.1
D 5 222 307841 1014.82 1282 1254 302.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter